89SupremeCutty Posted July 5, 2008 Report Share Posted July 5, 2008 i love that sound when down shifting like that. Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted July 5, 2008 Report Share Posted July 5, 2008 Mine looks better!!!!!!!!!! So I take it your happy with the way it came out? You feel much a difference at all with it? i know I did over ther RPM range. Quote Link to comment Share on other sites More sharing options...
AWeb80 Posted July 5, 2008 Author Report Share Posted July 5, 2008 It is night and day.....you watch the vid? Yours may look better, but I did mine myself.....ZING Quote Link to comment Share on other sites More sharing options...
intern8tion9l Posted July 8, 2008 Report Share Posted July 8, 2008 i just welded up my own exhaust too, and like you discovered that i suck more than i originally thought at welding. you could have grinded those down though and passed it as mediocre.....haha Quote Link to comment Share on other sites More sharing options...
MonteCarloDude Posted July 8, 2008 Report Share Posted July 8, 2008 So aweb, You feel like makeing one up for my monte?!?!? Quote Link to comment Share on other sites More sharing options...
AWeb80 Posted July 8, 2008 Author Report Share Posted July 8, 2008 no. too many logistics.... only 1" on either side of the DP and the firewall.....a few degrees' off and it won't fit....I'm not gonna go through that work and have you pay the money and have a chance at it not fitting.... besides, too much welding.....my arms are still fried. Quote Link to comment Share on other sites More sharing options...
MonteCarloDude Posted July 8, 2008 Report Share Posted July 8, 2008 no. too many logistics.... only 1" on either side of the DP and the firewall.....a few degrees' off and it won't fit....I'm not gonna go through that work and have you pay the money and have a chance at it not fitting.... besides, too much welding.....my arms are still fried. There is a lot more room with the firewalls on gen 1.5's!! Im just messing with you. I had to take a shot and ask you first before buying one off teh w-body store. Awsome job on that DP BTW. Quote Link to comment Share on other sites More sharing options...
CSI_MuNkY Posted July 8, 2008 Report Share Posted July 8, 2008 I just placed my order with the same place. I'm not touching the DP, just the rest of the exhaust... Its been a long time since I did any welding, so my welds will probably suck... but I'll grind them smooth, lol Jamie Quote Link to comment Share on other sites More sharing options...
slick Posted July 8, 2008 Report Share Posted July 8, 2008 Soo.... did you open up the flange to a full 2.5" opening, or did you leave that stock opening on the flange? Also, on one of the pictures before you painted it, why did it go down to like 1.75" in a horrible compression? Hopefully you didn't use this. Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted July 8, 2008 Report Share Posted July 8, 2008 Chris, even if you did open the flange to 2.5" that would do absolutly nothing cause the rear manifold is 2" I.D. And my stock DP was ~1.375" I.D. Quote Link to comment Share on other sites More sharing options...
slick Posted July 8, 2008 Report Share Posted July 8, 2008 Chris, even if you did open the flange to 2.5" that would do absolutly nothing cause the rear manifold is 2" I.D. And my stock DP was ~1.375" I.D. Ahh... good info to know. Quote Link to comment Share on other sites More sharing options...
AWeb80 Posted July 8, 2008 Author Report Share Posted July 8, 2008 Yes, That Is A 2 Inch Reducer On The End. I'll Upgrade To 2.5 Someday. Quote Link to comment Share on other sites More sharing options...
BIGBULS Posted July 9, 2008 Report Share Posted July 9, 2008 Downpipes are where the 3100 Beretta's have the largest restriction too. Dual walled for quicker catalyst light off on a cold start, but 1 5/8th inches inside. I also note that AWeb's car seems to shift a touch higher off 1-2 than most W-Cars. Seems like the one 1st gear pull it didn't shift until 5850-5900rpm, and about 5750-5800rpm for the other one. Most cars seem to shift at, or just past 5500. That alone will help.......... Either way, a 2.25-2.50inch MANDREL bent exhaust from the manifold BACK is the way to go for 3X00 cars.............I bet nearly 10hp can be added from exhaust work alone. Quote Link to comment Share on other sites More sharing options...
AWeb80 Posted July 9, 2008 Author Report Share Posted July 9, 2008 Thanks Quote Link to comment Share on other sites More sharing options...
BXX Posted July 9, 2008 Report Share Posted July 9, 2008 I think a good exhaust can add more than 10hp IMHO... Quote Link to comment Share on other sites More sharing options...
BIGBULS Posted July 9, 2008 Report Share Posted July 9, 2008 Canada dynoed his Beretta a few years back when it was still a 3100. Stock, an L82 Burrito will make 118-120whp in good shape (less than a W-Car due to more intake/exhaust restriction). With an FFP UDP and a 2.25in manfold back mandrel bent exhaust with an Extremeflow OBDII cat and a Dynomax Ultraflow muffler but a stock airbox with a paper filter it made 133.XX whp. With a K&N drop in, this jumped like 1.25 whp. Swapped to his RSM WAI, it jumped another 3ish whp (to 138whp). Anyway, with a stock airbox (but the UDP and exhaust), it was making 133..........*maybe* 15whp over stock.........and since we KNOW that FFP UDP's make 6-7whp at 5000rpm (his power peak), that means HIS exhaust (which was pretty well designed) was good for 8-9whp (or so). So yeah..........I stick to my 10hp estimate Quote Link to comment Share on other sites More sharing options...
BIGBULS Posted July 9, 2008 Report Share Posted July 9, 2008 I found his dyno comparo: I was close on my numbers............ Edit: Same runs, different (NO) SAE correction factor (and plotted vs mph...not rpm.....all 2nd gear to the 6K rev limit): You can really see that K&N drop-ins aren't worth shit........... Quote Link to comment Share on other sites More sharing options...
BXX Posted July 9, 2008 Report Share Posted July 9, 2008 K&Ns are nice on a stock car that you have the time to clean and will own in the long run... But a good intake is better.. I know my 3" FWI pwns any K&N Quote Link to comment Share on other sites More sharing options...
AWeb80 Posted July 9, 2008 Author Report Share Posted July 9, 2008 K&Ns are nice on a stock car that you have the time to clean and will own in the long run... But a good intake is better.. I know my 3" FWI pwns any K&N x2 ....and ~8 whp is my guess that the DP gave me....maybe I'll dyno again after full exhaust.... Quote Link to comment Share on other sites More sharing options...
mfewtrail Posted July 9, 2008 Report Share Posted July 9, 2008 Did Aaron weld that for you? Car sounds sweet! Quote Link to comment Share on other sites More sharing options...
Euro Posted July 9, 2008 Report Share Posted July 9, 2008 I think a good exhaust can add more than 10hp IMHO... not on a 3100 w-body Quote Link to comment Share on other sites More sharing options...
AWeb80 Posted July 9, 2008 Author Report Share Posted July 9, 2008 I think a good exhaust can add more than 10hp IMHO... not on a 3.1 w-body fixed Quote Link to comment Share on other sites More sharing options...
Euro Posted July 10, 2008 Report Share Posted July 10, 2008 I think a good exhaust can add more than 10hp IMHO... not on a 3.1/3x00 fixed fixed again Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted July 10, 2008 Report Share Posted July 10, 2008 I think a good exhaust can add more than 10hp IMHO... not on a 3.1/3x00 fixed fixed again actually its a hell of a difference. When I had the 3100 in my car it was like a different motor with the bigger exhaust and DP. Although it was still a 3100 Quote Link to comment Share on other sites More sharing options...
Euro Posted July 10, 2008 Report Share Posted July 10, 2008 Right, I agree it wakes up the car, just nothin more than a 10-12hp gain Quote Link to comment Share on other sites More sharing options...
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